MACOM AT65-0008TR, AT65-0008-TB, AT65-0008 Datasheet

Voltage Variable Attenuator,
900 - 2500 MHz

V 5.00

AT65-0008

Features

n High Third Order Intercept Point
n Surface Mount Package
n 25 dB Dynamic Range
n ±5% Operating Bandwidth
n PIN Diode Based
n Single Control Voltage

SO-8

Description

M/A-COM’s AT65-0008 is a PIN diode based voltage
variable attenuator. It is packaged in an 8 lead small outline
narrow body plastic, surface mount package. The attenuator
has linear operating power and intercept point levels higher
than GaAs FET MMIC based voltage variable attenuators.
The VVA is suited for use where low distortion and high
linear operating power are required. The device operating
frequency is selected in the 900 to 2500 MHz frequency
band by defining the length of the T/4 (a quarter wave
transmission line at the operating frequency) connected to
pins 5 and 6.

Package outline conforms to JEDEC standard MS-012AA.

Electrical Specifications: TA = 25°C, Frequency: ± 5% Bandwidth,
900-2500 MHz

Parameter Test Conditions Units Min. Typ. Max.

Insertion Loss 2V dB — 1.2 1.5

VSWR 0 to 10 dB Ratio — 1.6:1 2.0:1

VSWR 10 to 20 dB Ratio — 1.8:1 2.0:1

Attenuation 0V dB 25 28 —

Attenuation Flatness

vs Frequency

Switching Speed

Linear Operation

Input IP

3

to 10 dB
to 20 dB
to 30 dB

50% Control to 90%/10% RF µSec — 2 5

0 to 20 dB dBm — +17 +15

Two-tone inputs to +5 dBm dBm +40 — —

dB
dB
dB

—
—
—

0.1

0.15

1.2

0.2

0.3

1.5

Voltage Variable Attenuator, 900 - 2500 MHz

Deviation from Nom. Atten. (dB)

AT65-0008

V 5.00

Pin Configuration

Pin No. Function Pin No. Function

1 RF Input 5 Transmission

Line Out

2 GND 6 Transmission

Line In
3 Bias Input 7 GND
4 GND 8 RF Output

Recommended PCB Configuration

Absolute Maximum Ratings

Parameter

Max. Input Power +27 dBm

Operating Voltage + 10 Volts

Operating Temperature -40°C to +85°C

Storage Temperature -65°C to +125°C

Absolute Maximum

1. Circuit Material - GETEK, .014 Thick

2. 90° of length consists of printed transmission line plus
effective length of internal circuitry and lead length.

Typical Performance Curves

55

50

45

40

IP3 (dB)

35

30

0 dB 3 dB 6 dB 10 dB 15 dB 20 dB 22 dB

Attenuation

Specifications subject to change without notice.

n North America: Tel. [phone]
n Asia/Pacific: Tel.[phone], Fax [phone]
n Europe: Tel. [phone], Fax[phone]

Visit www.macom.com for additional data sheets and product information.

Attenuation Flatness, 3 dB IP3 vs. Attenuation

0.4

0.2

0

-0.2

-0.4
Fc - 5% Fc - 3% Fc Fc + 3% Fc + 5%

Frequency (GHz)

2